The liar wants to be believed, but lying undermines the foundation for credibility. - Randal Marlin

Aristotle writes that persuasion is based on three things: the ethos, or personal character of the speaker; the pathos, or getting the audience into the right kind of emotional receptivity; and the logos, or the argument itself, carried out by abbreviated syllogisms, or something like deductive syllogisms, and by the use of example.

When you give false information you tend to restrict the freedom of choice to others.

Party politics in modern democratic society means pandering to a wide variety of different groups and sympathizing with their often quite base motives, such as revenge, power, booty, and spoils, to maintain the necessary level of support.